Britannica
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How large is a standard professional boxing ring?
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boxing
Manny Pacquiao (right) and Floyd Mayweather, Jr., in their 2015 welterweight bout; Mayweather won in a unanimous decision.
In professional boxing, there is no single, universally mandated size for a ring because there is no global governing body. However, professional bouts generally take place in a ring that measures between 18 and 22 feet (5.5 to 6.7 metres) square, surrounded by four strands of rope.1